Poor niece and perverted uncle

A tragic story about Konomi Nishimiya's niece living with her uncle after her parents passed away. It wouldn't matter if Uncle Konomi's family members were constantly upset and didn't want to raise her in this house, forcing her uncle to find someone else to raise and educate her.
But unexpectedly, the person her uncle found was a pervert in the guise of an intellectual teacher. After bringing her home, he continuously tied Konomi up and raped her every day, from then on her new life began. she was like hell.

Poor niece and perverted uncle